This soft polyester LED face mask has neon green fangs that light up in a sound reactive pattern that is totally incredible. Forget those kandi masks, these are lighter and way more impressive. The small battery pack is attached to the back and has a knob that allows you to adjust the sound sensitivity according to how loud the music is. One set of rechargeable AAA batteries will last you over 24 hours of bass blaring raging, so you'll look good no matter how long that festival is. EDC or Burning Man these light up face masks are basically the best thing ever created.